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(parent: a271325) | patch
tipc: Use size_add() in calls to struct_size()
authorGustavo A. R. Silva <gustavoars@kernel.org>
Fri, 15 Sep 2023 19:16:26 +0000 (13:16 -0600)
committerDavid S. Miller <davem@davemloft.net>
Mon, 18 Sep 2023 08:38:32 +0000 (09:38 +0100)
commit2506a91734754de690869824fb0d1ac592ec1266
tree3a6ef8a7c7f2792e405cc3a34460366469f51f92tree | snapshot
parenta2713257ee2be22827d7bc248302d408c91bfb95commit | diff
tipc: Use size_add() in calls to struct_size()

If, for any reason, the open-coded arithmetic causes a wraparound,
the protection that `struct_size()` adds against potential integer
overflows is defeated. Fix this by hardening call to `struct_size()`
with `size_add()`.

Fixes: e034c6d23bc4 ("tipc: Use struct_size() helper")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/tipc/link.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)